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For triangle cab find the length of a Side a
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For triangle cab find the length of a Side a

For triangle cab find the length of a Side a-example-1
User Arek Wilk
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1 Answer

4 votes
we know that
the law of cosines establishes that
a²=c²+b²-2*c*b*cos A
in this problem
a=?
b=21
c=32
A=40°
a²=32²+21²-2*32*21*cos 40-----> a²=435.44---------> a=20.87 units
User Alvi
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8.1k points
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